This doesn’t give us a lot of info, but we do see the camera flash up on the rear of the phone then disappear completely. It looks like it’s made up of three sensors, which are placed smack bang in the middle-rear of the handset.

OnePlus says that the vanishing act is all down to “colour-shifting glass technology”. This makes it sound like the company’s just whacked a tinted window on the rear of the phone, but it’s actually a bit more complicated than that.

The glass is electrochromic, which means that you can control the level of tint electronically. When the tint is active, the cameras are completely hidden behind the strip of glass. Activate the camera app and the tint level drops, revealing the outline of those triple sensors.

In OnePlus’ own words, the Concept One handset uses “electrochromic glass, an electronically tintable glass, to cloak the rear camera lenses behind a clean glass body and reveal them only when they’re in use”.

The phone maker has previously teamed up with McLaren to create special-edition models, and OnePlus says that this electrochromic glass technology is currently used in the aviation and high-end automobile industries to greatly reduce glare, such as on the windows of the Boeing 787s and the McLaren 720s.

Ruth started her career at Metro newspaper, working as a staff writer for the features section. After a brief stint working on a new channel for VICE UK, she joined the Trusted Reviews team in 2019 as…

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